﻿432 
  E. 
  E. 
  TOMES 
  ON 
  LOWER-OOLITE 
  MADREPORARIA. 
  

  

  to 
  say, 
  more 
  frequently 
  at 
  the 
  ends 
  of 
  the 
  leaves 
  than 
  at 
  their 
  curled- 
  

   up 
  lateral 
  edges, 
  thus 
  promoting 
  an 
  outward 
  or 
  horizonal, 
  rather 
  than 
  

   an 
  upward 
  or 
  vertical 
  growth. 
  

  

  The 
  largest 
  corallum 
  observed 
  has 
  a 
  diameter 
  of 
  3 
  inches, 
  and 
  a 
  

   height 
  of 
  1 
  inch. 
  

  

  The 
  longest 
  leaf 
  or 
  furrow, 
  following 
  its 
  curves, 
  is 
  1 
  inch, 
  and 
  its 
  

   diameter 
  1| 
  to 
  3 
  lines. 
  

  

  I 
  have 
  taken 
  examples 
  of 
  this 
  coral 
  from 
  the 
  oolite 
  marl 
  of 
  

   Leckhampton 
  Hill 
  ; 
  and 
  ono 
  has 
  been 
  forwarded 
  to 
  me 
  from 
  Mr. 
  W. 
  

   Jenkins, 
  of 
  Cheltenham, 
  which 
  he 
  took 
  from 
  " 
  the 
  oyster-bed," 
  

   Cleeve 
  Hill. 
  

  

  Genus 
  Ccenotheca, 
  Quenst. 
  

  

  This 
  genus 
  has 
  been 
  proposed 
  by 
  Prof. 
  Quenstedt 
  for 
  a 
  small 
  

   group 
  of 
  the 
  Astraaidae, 
  which 
  while 
  retaining 
  the 
  form 
  of 
  simple 
  

   turbinate 
  Montlivaltice, 
  nevertheless 
  have 
  some 
  smaller 
  calices 
  placed 
  

   in 
  an 
  irregular 
  manner 
  outside 
  a 
  larger 
  and 
  more 
  central 
  one. 
  

  

  The 
  definition 
  of 
  the 
  genus 
  is 
  unsatisfactory, 
  and, 
  without 
  the 
  

   excellent 
  figures 
  which 
  accompany 
  it, 
  would 
  be 
  of 
  very 
  little 
  value. 
  

  

  So 
  far 
  as 
  I 
  can 
  judge, 
  tho 
  smaller 
  calices 
  are 
  the 
  result 
  of 
  gem- 
  

   mation, 
  and 
  not 
  of 
  fissiparity 
  ; 
  and 
  I 
  believe 
  the 
  genus, 
  if 
  a 
  good 
  

   one, 
  should 
  be 
  placed 
  in 
  connexion 
  with 
  Latimceandra, 
  Chorisastrcea, 
  

   and 
  Phyllogyra 
  (.see 
  p. 
  448). 
  

  

  I 
  have 
  met 
  'with 
  a 
  specimen 
  from 
  the 
  Pisolite 
  of 
  Crickley 
  Hill, 
  

   which 
  seems 
  to 
  fulfil 
  the 
  conditions 
  necessary 
  for 
  its 
  identification 
  

   with 
  this 
  genus 
  ; 
  but 
  1 
  have 
  regarded 
  it 
  hitherto 
  as 
  the 
  peduncle 
  of 
  

   some 
  species. 
  

  

  Genus 
  Goniocora, 
  Edw. 
  & 
  Haime. 
  

  

  Goxiocora 
  concinxa, 
  n. 
  sp. 
  (PL 
  XVIII. 
  figs. 
  18, 
  19.) 
  

  

  Fragments 
  in 
  a 
  pretty 
  good 
  state 
  of 
  preservation 
  of 
  a 
  small 
  

   species 
  of 
  coral 
  referable 
  to 
  this 
  genus 
  are 
  not 
  uncommon 
  in 
  the 
  

   lower 
  reef 
  at 
  Crickley 
  Hill 
  ; 
  they 
  are 
  quite 
  distinct 
  from 
  those 
  of 
  

   the 
  Coral 
  Kag 
  of 
  England, 
  France, 
  and 
  Germany. 
  

  

  The 
  species 
  to 
  which 
  it 
  bears 
  the 
  greatest 
  resemblance 
  in 
  size, 
  

   mode 
  of 
  growth 
  and 
  number 
  of 
  septa, 
  is 
  the 
  one 
  figured 
  by 
  M. 
  de 
  

   Fromentel 
  under 
  the 
  name 
  of 
  G. 
  Haimei) 
  but 
  it 
  differs 
  from 
  this 
  

   considerably 
  in 
  the 
  number 
  of 
  cycles 
  of 
  the 
  septa, 
  and 
  in 
  the 
  rela- 
  

   tively 
  greater 
  development 
  of 
  the 
  higher 
  orders. 
  

  

  It 
  appertains 
  to 
  the 
  " 
  decameral 
  " 
  division 
  of 
  the 
  genus, 
  and 
  

   cannot 
  be 
  confounded 
  for 
  a 
  moment 
  with 
  our 
  Steeple- 
  Ashton 
  

   species, 
  which 
  has 
  the 
  normal 
  number 
  of 
  septa, 
  six, 
  instead 
  of, 
  as 
  in 
  

   this 
  species, 
  ten 
  primary 
  ones. 
  

  

  It 
  is 
  a 
  small 
  species 
  ; 
  and 
  the 
  mural 
  costae 
  are 
  nearly 
  smooth, 
  and 
  

   have 
  between 
  them 
  rather 
  scattered 
  dissepiments. 
  On 
  some 
  of 
  

   the 
  branches 
  are 
  intermittent 
  rings 
  of 
  rudimentary 
  epitheca. 
  

  

  The 
  septa 
  are 
  somewhat 
  exsert, 
  and 
  have 
  regular 
  papillated 
  mar- 
  

   gins, 
  the 
  number 
  of 
  papillae 
  being 
  about 
  ten 
  or 
  twelve. 
  They 
  are 
  

   much 
  less 
  stout 
  at 
  the 
  outer 
  end 
  than 
  in 
  either 
  G. 
  Haimei 
  or 
  67. 
  

  

  